WebSVN – HelenOS – Diff – /kernel/trunk/generic/src/main/kinit.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/**
 * @file    kinit.c
 * @brief   Kernel initialization thread.
 *
 * This file contains kinit kernel thread which carries out
 * high level system initialization.
 *
 * This file is responsible for finishing SMP configuration
 * and creation of userspace init tasks.
 */
 
#include <main/kinit.h>
#include <config.h>
#include <arch.h>
#include <proc/scheduler.h>
#include <proc/task.h>
#include <proc/thread.h>
#include <panic.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/page.h>
#include <arch/mm/page.h>
#include <mm/as.h>
#include <mm/frame.h>
#include <print.h>
#include <memstr.h>
#include <console/console.h>
#include <interrupt.h>
#include <console/kconsole.h>
#include <security/cap.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/mps.h>
#endif /* CONFIG_SMP */
 
#include <synch/waitq.h>
#include <synch/spinlock.h>
 
#ifdef CONFIG_TEST
#include <test.h>
#endif /* CONFIG_TEST */
 
/** Kernel initialization thread.
 *
 * kinit takes care of higher level kernel
 * initialization (i.e. thread creation,
 * userspace initialization etc.).
 *
 * @param arg Not used.
 */
void kinit(void *arg)
{
    thread_t *t;
    task_t *utask;
 
    interrupts_disable();
 
#ifdef CONFIG_SMP           
    if (config.cpu_count > 1) {
        /*
         * Create the kmp thread and wait for its completion.
         * cpu1 through cpuN-1 will come up consecutively and
         * not mess together with kcpulb threads.
         * Just a beautification.
         */
        if ((t = thread_create(kmp, NULL, TASK, 0, "kmp"))) {
            spinlock_lock(&t->lock);
            t->flags |= X_WIRED;
            t->cpu = &cpus[0];
            spinlock_unlock(&t->lock);
            thread_ready(t);
            waitq_sleep(&kmp_completion_wq);
        }
        else panic("thread_create/kmp\n");
    }
#endif /* CONFIG_SMP */
    /*
     * Now that all CPUs are up, we can report what we've found.
     */
    cpu_list();
 
#ifdef CONFIG_SMP
    if (config.cpu_count > 1) {
        int i;
       
        /*
         * For each CPU, create its load balancing thread.
         */
        for (i = 0; i < config.cpu_count; i++) {
 
            if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) {
                spinlock_lock(&t->lock);           
                t->flags |= X_WIRED;
                t->cpu = &cpus[i];
                spinlock_unlock(&t->lock);
                thread_ready(t);
            }
            else panic("thread_create/kcpulb\n");
 
        }
    }
#endif /* CONFIG_SMP */
 
    /*
     * At this point SMP, if present, is configured.
     */
    arch_post_smp_init();
 
    /*
     * Create kernel console.
     */
    if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole")))
        thread_ready(t);
    else
        panic("thread_create/kconsole\n");
 
    interrupts_enable();
   
    count_t i;
    for (i = 0; i < init.cnt; i++) {
        /*
         * Run user tasks.
         */
       
        if (init.tasks[i].addr % FRAME_SIZE)
            panic("init[%d].addr is not frame aligned", i);
 
        utask = task_run_program((void *) init.tasks[i].addr, "USPACE");
        if (utask) {
            /*
             * Set capabilities to init userspace tasks.
             */
            cap_set(utask, CAP_CAP | CAP_MEM_MANAGER | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
           
            if (!ipc_phone_0)
                ipc_phone_0 = &utask->answerbox;
        } else
            printf("Init task %zd not started.\n", i);
    }
 
#ifdef CONFIG_TEST
    test();
#endif /* CONFIG_TEST */
 
    if (!stdin) {
        while (1) {
            thread_sleep(1);
            printf("kinit... ");
        }
    }
 
}
 

Rev 1297	Rev 1341
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/**	29	/**
30	* @file kinit.c	30	* @file kinit.c
31	* @brief Kernel initialization thread.	31	* @brief Kernel initialization thread.
32	*	32	*
33	* This file contains kinit kernel thread which carries out	33	* This file contains kinit kernel thread which carries out
34	* high level system initialization.	34	* high level system initialization.
35	*	35	*
36	* This file is responsible for finishing SMP configuration	36	* This file is responsible for finishing SMP configuration
37	* and creation of userspace init tasks.	37	* and creation of userspace init tasks.
38	*/	38	*/
39		39
40	#include <main/kinit.h>	40	#include <main/kinit.h>
41	#include <config.h>	41	#include <config.h>
42	#include <arch.h>	42	#include <arch.h>
43	#include <proc/scheduler.h>	43	#include <proc/scheduler.h>
44	#include <proc/task.h>	44	#include <proc/task.h>
45	#include <proc/thread.h>	45	#include <proc/thread.h>
46	#include <panic.h>	46	#include <panic.h>
47	#include <func.h>	47	#include <func.h>
48	#include <cpu.h>	48	#include <cpu.h>
49	#include <arch/asm.h>	49	#include <arch/asm.h>
50	#include <mm/page.h>	50	#include <mm/page.h>
51	#include <arch/mm/page.h>	51	#include <arch/mm/page.h>
52	#include <mm/as.h>	52	#include <mm/as.h>
53	#include <mm/frame.h>	53	#include <mm/frame.h>
54	#include <print.h>	54	#include <print.h>
55	#include <memstr.h>	55	#include <memstr.h>
56	#include <console/console.h>	56	#include <console/console.h>
57	#include <interrupt.h>	57	#include <interrupt.h>
58	#include <console/kconsole.h>	58	#include <console/kconsole.h>
59	#include <security/cap.h>	59	#include <security/cap.h>
60		60
61	#ifdef CONFIG_SMP	61	#ifdef CONFIG_SMP
62	#include <arch/smp/mps.h>	62	#include <arch/smp/mps.h>
63	#endif /* CONFIG_SMP */	63	#endif /* CONFIG_SMP */
64		64
65	#include <synch/waitq.h>	65	#include <synch/waitq.h>
66	#include <synch/spinlock.h>	66	#include <synch/spinlock.h>
67		67
68	#ifdef CONFIG_TEST	68	#ifdef CONFIG_TEST
69	#include <test.h>	69	#include <test.h>
70	#endif /* CONFIG_TEST */	70	#endif /* CONFIG_TEST */
71		71
72	/** Kernel initialization thread.	72	/** Kernel initialization thread.
73	*	73	*
74	* kinit takes care of higher level kernel	74	* kinit takes care of higher level kernel
75	* initialization (i.e. thread creation,	75	* initialization (i.e. thread creation,
76	* userspace initialization etc.).	76	* userspace initialization etc.).
77	*	77	*
78	* @param arg Not used.	78	* @param arg Not used.
79	*/	79	*/
80	void kinit(void *arg)	80	void kinit(void *arg)
81	{	81	{
82	thread_t *t;	82	thread_t *t;
83	task_t *utask;	83	task_t *utask;
84		84
85	interrupts_disable();	85	interrupts_disable();
86		86
87	#ifdef CONFIG_SMP	87	#ifdef CONFIG_SMP
88	if (config.cpu_count > 1) {	88	if (config.cpu_count > 1) {
89	/*	89	/*
90	* Create the kmp thread and wait for its completion.	90	* Create the kmp thread and wait for its completion.
91	* cpu1 through cpuN-1 will come up consecutively and	91	* cpu1 through cpuN-1 will come up consecutively and
92	* not mess together with kcpulb threads.	92	* not mess together with kcpulb threads.
93	* Just a beautification.	93	* Just a beautification.
94	*/	94	*/
95	if ((t = thread_create(kmp, NULL, TASK, 0, "kmp"))) {	95	if ((t = thread_create(kmp, NULL, TASK, 0, "kmp"))) {
96	spinlock_lock(&t->lock);	96	spinlock_lock(&t->lock);
97	t->flags \|= X_WIRED;	97	t->flags \|= X_WIRED;
98	t->cpu = &cpus[0];	98	t->cpu = &cpus[0];
99	spinlock_unlock(&t->lock);	99	spinlock_unlock(&t->lock);
100	thread_ready(t);	100	thread_ready(t);
101	waitq_sleep(&kmp_completion_wq);	101	waitq_sleep(&kmp_completion_wq);
102	}	102	}
103	else panic("thread_create/kmp\n");	103	else panic("thread_create/kmp\n");
104	}	104	}
105	#endif /* CONFIG_SMP */	105	#endif /* CONFIG_SMP */
106	/*	106	/*
107	* Now that all CPUs are up, we can report what we've found.	107	* Now that all CPUs are up, we can report what we've found.
108	*/	108	*/
109	cpu_list();	109	cpu_list();
110		110
111	#ifdef CONFIG_SMP	111	#ifdef CONFIG_SMP
112	if (config.cpu_count > 1) {	112	if (config.cpu_count > 1) {
113	int i;	113	int i;
114		114
115	/*	115	/*
116	* For each CPU, create its load balancing thread.	116	* For each CPU, create its load balancing thread.
117	*/	117	*/
118	for (i = 0; i < config.cpu_count; i++) {	118	for (i = 0; i < config.cpu_count; i++) {
119		119
120	if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) {	120	if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) {
121	spinlock_lock(&t->lock);	121	spinlock_lock(&t->lock);
122	t->flags \|= X_WIRED;	122	t->flags \|= X_WIRED;
123	t->cpu = &cpus[i];	123	t->cpu = &cpus[i];
124	spinlock_unlock(&t->lock);	124	spinlock_unlock(&t->lock);
125	thread_ready(t);	125	thread_ready(t);
126	}	126	}
127	else panic("thread_create/kcpulb\n");	127	else panic("thread_create/kcpulb\n");
128		128
129	}	129	}
130	}	130	}
131	#endif /* CONFIG_SMP */	131	#endif /* CONFIG_SMP */
132		132
133	/*	133	/*
134	* At this point SMP, if present, is configured.	134	* At this point SMP, if present, is configured.
135	*/	135	*/
136	arch_post_smp_init();	136	arch_post_smp_init();
137		137
138	/*	138	/*
139	* Create kernel console.	139	* Create kernel console.
140	*/	140	*/
141	if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole")))	141	if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole")))
142	thread_ready(t);	142	thread_ready(t);
143	else	143	else
144	panic("thread_create/kconsole\n");	144	panic("thread_create/kconsole\n");
145		145
146	interrupts_enable();	146	interrupts_enable();
147		147
148	count_t i;	148	count_t i;
149	for (i = 0; i < init.cnt; i++) {	149	for (i = 0; i < init.cnt; i++) {
150	/*	150	/*
151	* Run user tasks.	151	* Run user tasks.
152	*/	152	*/
153		153
154	if (init.tasks[i].addr % FRAME_SIZE)	154	if (init.tasks[i].addr % FRAME_SIZE)
155	panic("init[%d].addr is not frame aligned", i);	155	panic("init[%d].addr is not frame aligned", i);
156		156
157	utask = task_run_program((void *) init.tasks[i].addr, "USPACE");	157	utask = task_run_program((void *) init.tasks[i].addr, "USPACE");
158	if (utask) {	158	if (utask) {
159	/*	159	/*
160	* Set capabilities to init userspace tasks.	160	* Set capabilities to init userspace tasks.
161	*/	161	*/
162	cap_set(utask, CAP_CAP \| CAP_MEM_MANAGER \| CAP_IO_MANAGER \| CAP_PREEMPT_CONTROL);	162	cap_set(utask, CAP_CAP \| CAP_MEM_MANAGER \| CAP_IO_MANAGER \| CAP_PREEMPT_CONTROL \| CAP_IRQ_REG);
163		163
164	if (!ipc_phone_0)	164	if (!ipc_phone_0)
165	ipc_phone_0 = &utask->answerbox;	165	ipc_phone_0 = &utask->answerbox;
166	} else	166	} else
167	printf("Init task %zd not started.\n", i);	167	printf("Init task %zd not started.\n", i);
168	}	168	}
169		169
170	#ifdef CONFIG_TEST	170	#ifdef CONFIG_TEST
171	test();	171	test();
172	#endif /* CONFIG_TEST */	172	#endif /* CONFIG_TEST */
173		173
174	if (!stdin) {	174	if (!stdin) {
175	while (1) {	175	while (1) {
176	thread_sleep(1);	176	thread_sleep(1);
177	printf("kinit... ");	177	printf("kinit... ");
178	}	178	}
179	}	179	}
180		180
181	}	181	}
182		182

Subversion Repositories HelenOS

(root)/kernel/trunk/generic/src/main/kinit.c – Rev 1297 → 1341